Answer A. Innate.
We do not know if it is a trait that all humans are born with (which would be innate), or if it's something that we develop as we grow older.
The other words wouldn't make sense in the place of innate.
According to London, the quintessential force that has driven man to survive and wander, or drift, is food. He states that man has drifted since prehistoric times in search of food:
The history of civilisation is a history of wandering, sword in hand, in search of food… It has always been so, from the time of the first pre-human anthropoid crossing a mountain-divide in quest of better berry-bushes beyond, down to the latest Slovak, arriving on our shores to-day, to go to work in the coal-mines of Pennsylvania. These migratory movements of peoples have been called drifts, and the word is apposite. Unplanned, blind, automatic, spurred on by the pain of hunger, man has literally drifted his way around the planet.”
He states that it is hunger, not romance or adventure, that fuels man’s need to drift.
Answer:
The order in which events occur
Explanation:
I hope this helps :)
